安徽农业科学2016，Vol.44Issue(15)：28-30,3.
氮素添加对退化草原优势种生态位与种间关联度的影响
Effects of Nitrogen Addition on Niche and Species Association of Dominant Species in Degraded Grassland
王晶 1朱华功2
作者信息
- 1. 中国科学院植物研究所植被与环境变化国家重点实验室，北京100093
- 2. 中国科学院大学生命科学学院，北京100049
- 折叠
摘要
Abstract
Objective] The aim was to study effects of nitrogen addition on dominant species niche and species association in degraded grass-land, to provide theoretical basis for management and restoration of degraded grassland.[Method] Species associations, niche and niche over-laps of dominant species were analyzed to indicate relationships among species in degraded grassland under different concentrations of nitrogen addition.[ Result] The results showed that negative significant association was observed between Leymus chinensis and Allium polyrhizum when low and medium level nitrogen was added into community; Increasing nitrogen could expand the niche breadth of Leymus chinensis and Stipa grandis, at the same time, narrow the niche breadth of Allium polyrhizum.[Conclusion] During the recovery of degraded community, nitrogen addition can improve the competitive ability of Leymus chinensis.关键词
退化草原/氮添加/生态位宽度/种间联结性Key words
Degraded grassland/Nitrogen addition/Niche breadth/Species association分类
农业科技引用本文复制引用
王晶,朱华功..氮素添加对退化草原优势种生态位与种间关联度的影响[J].安徽农业科学,2016,44(15):28-30,3.
